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Riojasaurus

Hiika maqaa: “lizard from La Rioja”1

Kan nyaate: BiqiltootaMorma-dheertotaTiraayaasikii Dhumaa

Riojasaurus was a huge, plant-eating dinosaur with a long neck and a heavy body. It lived during the Late Triassic period in what is now Argentina. It probably walked slowly on all four legs, munching on leaves with its leaf-shaped teeth.1

Kan jiraate

waggaa miliyoona 227 hanga 206 dura4

Tiraayaasikii Dhumaa

Fosiliiwwan kan itti argaman

La Rioja Province, Argentina (Los Colorados Formation)1 2

Dheerina

6.6 hanga 10 m (22 hanga 33 ft)1

Ulfaatina

800 kg hanga 3 toonii (1,800 hanga 6,600 lb)1

Ol-dheerina

5 m (16 ft)3

Saffisa ol'aanaa

gara 26 km/sa'a (16 mph)

Fiiguu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

Hammam ol-dheeraa ture?

Hammam ulfaataa ture?

akka konkolaataa 2 ulfaata

akka konkolaataa 2 tarreen dhaabatan dheeraaakka muuzii 56 walitti hiriiran dheeraaakka saree 150 ulfaataakka habxuu 600 ulfaataakka kutaalee mana barumsaa guutuu 4 ulfaataakka beeraa adii 7 ulfaataakka foddaa darbii 2 keessa ilaaluu danda'utti ol-dheeraameetira 100 sekondii 14 keessatti fiiguu danda'a (namni hunda caalaa saffisaan 9.6 barbaada)

SI wajjin yoo wal bira qabamu, Riojasaurus hammam guddaa ture?

Herrega qofa barbaadduu kee keessatti. Wanti tokkollee hin olkaa'amu, eessayyuu hin ergamu.

Hammam saffisaa ture?

Nama miilaan deemu gara 5 km/sa'a (3 mph)

Daa'ima saayikilii irra jiru gara 12 km/sa'a (7 mph)

Riojasaurus gara 26 km/sa'a (16 mph)

Farda gulufu gara 65 km/sa'a (40 mph)

Cheetaa gara 100 km/sa'a (62 mph)

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

Riojasaurus had very dense and massive leg bones, making it heavy and sturdy for an early sauropodomorph.1

Unlike most early relatives, Riojasaurus had four sacral vertebrae in its hip area instead of three, which helped support its weight.1

Its neck bones were longer than those of other sauropodomorphs found in the same formation, making its neck especially long.1

The first Riojasaurus skeleton found had no skull. A well-preserved skull was later discovered in 1987 and described in 1995.1

Some scientists think Riojasaurus may have been active at short intervals throughout the day and night, based on the shape of its eye bones (scleral rings).1

Riojasaurus is the only known riojasaurid dinosaur from South America, and it may be closely related to Melanorosaurus from southern Africa.1

Its front and hind limbs were nearly the same length, which is a clue that it walked on all fours and could not rear up on its back legs.1

Fakkii AI'n hojjetame: Riojasaurus — Fakkii AI'n hojjetame kan Riojasaurus maal fakkaachuu akka danda'u agarsiisu, kompiitaraan beekumsa saayintistootaa irratti hundaa'uun hojjetame. Tilmaama qofa: bineensi dhugaa adda ta'ee mul'achuu danda'a, halluu isaa dhugaa immoo namni beeku hin jiru.

ati gaafatte

Gaaffiiwwan waa'ee Riojasaurus baay'ee gaafataman

?How big was Riojasaurus?

Riojasaurus was about 6.6 metres (21.7 feet) long and weighed around 800 kilograms (1,764 pounds). Some large individuals may have reached 10 metres (32.8 feet) long and weighed 3 metric tons (3.3 short tons).1

?What did Riojasaurus eat?

Riojasaurus was a herbivore that ate plants. Its leaf-shaped, serrated teeth were used for grazing on soft vegetation like gymnosperms, and it may have swallowed stones (gastroliths) to help grind food in its stomach.1 3

?Could Riojasaurus walk on two legs?

No, Riojasaurus probably walked on all four legs. Its front and hind limbs were nearly the same length, and its leg bones were dense and massive, suggesting it moved slowly on all fours and could not rear up on its back legs.1

?When did Riojasaurus live?

Riojasaurus lived during the Late Triassic Period, about 225 to 213 million years ago. Its fossils have been found in the Los Colorados Formation in Argentina.1

?Is Riojasaurus a dinosaur?

Yes, Riojasaurus is a dinosaur. It is a herbivorous sauropodomorph dinosaur from the Late Triassic of Argentina.1

?Did Riojasaurus have feathers?

No, there is no evidence that Riojasaurus had feathers. Its fossils show only scales and bones, and it is not known to have any feather-like structures.1

Ogeeyyii daayinootiif

Maqaa saayinsii: Riojasaurus
Kan maqaa baase: Bonaparte 19694
Garee: Morma-dheertota
Maatii / kilaadii: Riojasauridae4
Ramaddii: Sauropodomorpha4
Umurii dhagaawwanii: waggaa miliyoona 227 hanga 206 (Norian)4
Caasaawwan dhagaa: Los Colorados4
Biyyoota: Arjentiinaa4
Galmee fosilii: 2 The Paleobiology Database keessa4
Maqaan biraa: Strenusaurus (maqaawwan durii amma akka bineensa tokkootti lakkaa'amu)4
Argannoo: Riojasaurus was named by Argentine paleontologist José Bonaparte in 1969. The first skeleton (holotype PVL 3808) was found in 1966 in the Los Colorados Formation of La Rioja, Argentina. Later, many more skeletons and a skull were discovered.1 4
Ammallee falmisiisaa: Scientists disagree on whether Riojasaurus was completely quadrupedal or could sometimes walk on two legs. The hand and shoulder bones suggest it might have been able to move in different ways.1

Odeeffannoon eessaa dhufa

Riojasaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Riojasaurus | Zoology | Research Starters | EBSCOhost (ebsco.com)
Riojasaurus in The Paleobiology Database (CC BY 4.0): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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